Put two coats of Polycrylic on wing, so far.  I expected the first coat to really relax the silkspan, but was a bit surprised when the second coat did the same thing.  These are the fill coats on new silkspan.  Should I perhaps let a coat dry a lot longer before giving it another coat ??  I would expect at some point it plasticizes enough that the next coat won't relax the silkspan like I'm misting water on unfinished silkspan.  Or maybe it just needs more coats.  Or maybe it will do this every single time I add another coat of the water-based product ... ??  It did tighten back up, but I darn sure don't want it to loosen on the frame, which it also seemed to do in a few places.

Anyone got any experience they can share on what I can expect, or do differently ??

Thanks !  I only waited about an hour between coats.  That, I think, is my problem.  I can't treat water-based product like a lacquer-type product, which is hard for me.  It will be a Saito .56, so all of this will be painted and maybe clear coated too.